1317269823 has 16 divisors (see below), whose sum is σ = 1833601536. Its totient is φ = 839595680.

The previous prime is 1317269809. The next prime is 1317269851. The reversal of 1317269823 is 3289627131.

It is not a de Polignac number, because 1317269823 - 2¹⁷ = 1317138751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317269323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219286 + ... + 225212.

It is an arithmetic number, because the mean of its divisors is an integer number (114600096).

Almost surely, 2^1317269823 is an apocalyptic number.

1317269823 is a deficient number, since it is larger than the sum of its proper divisors (516331713).

1317269823 is a wasteful number, since it uses less digits than its factorization.

1317269823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9174.

The product of its digits is 108864, while the sum is 42.

The square root of 1317269823 is about 36294.2119765673. The cubic root of 1317269823 is about 1096.2045009627.

The spelling of 1317269823 in words is "one billion, three hundred seventeen million, two hundred sixty-nine thousand, eight hundred twenty-three".